I cannot comment extensively on Sendy (previously known as Sendiy) customer service as I do agree with @YellowBee that reaching out to them is a fairly difficult task and one that bears no results. I tried reaching out to them months ago about their wood planar in-ears via their profile in AliExpress (one of the few places that should allow some form of direct communication). No one responded.
That being said, Andrew from Musicteck has a channel of communication with them as one of the few sellers of the brand in the US. Although, they do not have a valid web site, those that have gone to CanJam or have chatted about their products with people that have tried them (I mean the latest ones), Sendy is a company that is vastly improving in product quality and one that really pays attention to what users are saying. So I do believe they should be given the benefit of the doubt regarding future products that come our way.
Onto this particular IEM. As the name of the product suggests, this is one of their first IEMs that made it to market and it was produced before the company actually changed it's name to Sendy and adopted the crane logo. So, although it says "new", this is actually an old product that has been on the market for at least 1.5-2 years if not more. I would refrain from buying because there are far better IEMs for the price. If you can spend 130 bucks on these, spend the extra 30 or 40 and get the Tin P1s. You can get them either on Drop when they make it available or from Linsoul. Sometimes you can find them on Amazon as well.
However, I do want to point out that as an owner of the Sendy Aiva headphones, whatever issues previous products might have had, the Aiva is a thing of perfection. For the price (650$), they outperform numerous headphones that are in the 1000-1500$ price range and the build quality is second to none. Think ZMF Aeoulus in many aspects but at half the price while not having to sacrifice wood quality on the cups, machining details or soft and slim leather band for comfort. Seriously, I love these things and I have more than a few big names in the collection.
I also want to say, that so long as ChiFi keeps pushing the boundaries of price/performance ratios, we can only stand to benefit from the competition that they present to US/EU brands on how much a Hi-Fi product should cost. I am a firm believer that many really good products are or were overpriced because there was no one to actually present a challenge. However, now, because of brands like Tin, BGVP, KZ, Fearless, Sendy and others, offerings on the market are much more competitive with a lot more choices to pick from and big names pushing out products at more reasonable prices. As a consumer, I cannot wait to see what the future holds for hybrid IEM development.
pgrozevI do agree to so part. But they have "sendiyaudio Official Store50.0% Positive Feedback" in the official store at aliexpress. That is a warning signal itself. Im not saying the sound is bad, but if anything would ever happen to them. You are f-cked. The brands you mention dose have a good costumer satisfaction :)
YellowBeeOh yes, in terms of product support, you are definitely on your own if something happens to them which is a big drawback. I sincerely hope they improve in that department. If I'm honest, I only decided on the Aivas after having listened to them at CanJam and after conferring with some reviewers on their sturdiness and durability. No point in paying 650 and then crying wolf when s*it hits the fan lol. Bottom line though, I would definitely not buy anything "Sendiy" branded because it would be from the infant stages of the company's development both in R&D and production. :)